The nazis believed the were the master race

The nazis and Hitler believed that the mater race were Germans, or ''Aryan'' (Which they believed meant pure German race.)  

People of other skin color (Most likely darker skin color.) such as africans, jews, and along those lines were seen as inferior in comparison.

The nazis believed that the white people were the master race. They hated everyone that wasn't like them. They hated blacks, jews, and other people of other races.

Athe rate increases as income increases